Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 255 insertions, 0 deletions

diff --git a/drivers/video/backlight/l4f00242t03.c b/drivers/video/backlight/l4f00242t03.c
new file mode 100644
index 000000000..cc763cf15
--- /dev/null
+++ b/drivers/video/backlight/l4f00242t03.c
@@ -0,0 +1,255 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * l4f00242t03.c -- support for Epson L4F00242T03 LCD
+ *
+ * Copyright 2007-2009 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
+ *	Inspired by Marek Vasut work in l4f00242t03.c
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/gpio/consumer.h>
+#include <linux/lcd.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+struct l4f00242t03_priv {
+	struct spi_device	*spi;
+	struct lcd_device	*ld;
+	int lcd_state;
+	struct regulator *io_reg;
+	struct regulator *core_reg;
+	struct gpio_desc *reset;
+	struct gpio_desc *enable;
+};
+
+static void l4f00242t03_reset(struct gpio_desc *gpiod)
+{
+	pr_debug("l4f00242t03_reset.\n");
+	gpiod_set_value(gpiod, 1);
+	mdelay(100);
+	gpiod_set_value(gpiod, 0);
+	mdelay(10);	/* tRES >= 100us */
+	gpiod_set_value(gpiod, 1);
+	mdelay(20);
+}
+
+#define param(x) ((x) | 0x100)
+
+static void l4f00242t03_lcd_init(struct spi_device *spi)
+{
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
+	const u16 cmd[] = { 0x36, param(0), 0x3A, param(0x60) };
+	int ret;
+
+	dev_dbg(&spi->dev, "initializing LCD\n");
+
+	ret = regulator_set_voltage(priv->io_reg, 1800000, 1800000);
+	if (ret) {
+		dev_err(&spi->dev, "failed to set the IO regulator voltage.\n");
+		return;
+	}
+	ret = regulator_enable(priv->io_reg);
+	if (ret) {
+		dev_err(&spi->dev, "failed to enable the IO regulator.\n");
+		return;
+	}
+
+	ret = regulator_set_voltage(priv->core_reg, 2800000, 2800000);
+	if (ret) {
+		dev_err(&spi->dev, "failed to set the core regulator voltage.\n");
+		regulator_disable(priv->io_reg);
+		return;
+	}
+	ret = regulator_enable(priv->core_reg);
+	if (ret) {
+		dev_err(&spi->dev, "failed to enable the core regulator.\n");
+		regulator_disable(priv->io_reg);
+		return;
+	}
+
+	l4f00242t03_reset(priv->reset);
+
+	gpiod_set_value(priv->enable, 1);
+	msleep(60);
+	spi_write(spi, (const u8 *)cmd, ARRAY_SIZE(cmd) * sizeof(u16));
+}
+
+static void l4f00242t03_lcd_powerdown(struct spi_device *spi)
+{
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
+
+	dev_dbg(&spi->dev, "Powering down LCD\n");
+
+	gpiod_set_value(priv->enable, 0);
+
+	regulator_disable(priv->io_reg);
+	regulator_disable(priv->core_reg);
+}
+
+static int l4f00242t03_lcd_power_get(struct lcd_device *ld)
+{
+	struct l4f00242t03_priv *priv = lcd_get_data(ld);
+
+	return priv->lcd_state;
+}
+
+static int l4f00242t03_lcd_power_set(struct lcd_device *ld, int power)
+{
+	struct l4f00242t03_priv *priv = lcd_get_data(ld);
+	struct spi_device *spi = priv->spi;
+
+	const u16 slpout = 0x11;
+	const u16 dison = 0x29;
+
+	const u16 slpin = 0x10;
+	const u16 disoff = 0x28;
+
+	if (power <= FB_BLANK_NORMAL) {
+		if (priv->lcd_state <= FB_BLANK_NORMAL) {
+			/* Do nothing, the LCD is running */
+		} else if (priv->lcd_state < FB_BLANK_POWERDOWN) {
+			dev_dbg(&spi->dev, "Resuming LCD\n");
+
+			spi_write(spi, (const u8 *)&slpout, sizeof(u16));
+			msleep(60);
+			spi_write(spi, (const u8 *)&dison, sizeof(u16));
+		} else {
+			/* priv->lcd_state == FB_BLANK_POWERDOWN */
+			l4f00242t03_lcd_init(spi);
+			priv->lcd_state = FB_BLANK_VSYNC_SUSPEND;
+			l4f00242t03_lcd_power_set(priv->ld, power);
+		}
+	} else if (power < FB_BLANK_POWERDOWN) {
+		if (priv->lcd_state <= FB_BLANK_NORMAL) {
+			/* Send the display in standby */
+			dev_dbg(&spi->dev, "Standby the LCD\n");
+
+			spi_write(spi, (const u8 *)&disoff, sizeof(u16));
+			msleep(60);
+			spi_write(spi, (const u8 *)&slpin, sizeof(u16));
+		} else if (priv->lcd_state < FB_BLANK_POWERDOWN) {
+			/* Do nothing, the LCD is already in standby */
+		} else {
+			/* priv->lcd_state == FB_BLANK_POWERDOWN */
+			l4f00242t03_lcd_init(spi);
+			priv->lcd_state = FB_BLANK_UNBLANK;
+			l4f00242t03_lcd_power_set(ld, power);
+		}
+	} else {
+		/* power == FB_BLANK_POWERDOWN */
+		if (priv->lcd_state != FB_BLANK_POWERDOWN) {
+			/* Clear the screen before shutting down */
+			spi_write(spi, (const u8 *)&disoff, sizeof(u16));
+			msleep(60);
+			l4f00242t03_lcd_powerdown(spi);
+		}
+	}
+
+	priv->lcd_state = power;
+
+	return 0;
+}
+
+static struct lcd_ops l4f_ops = {
+	.set_power	= l4f00242t03_lcd_power_set,
+	.get_power	= l4f00242t03_lcd_power_get,
+};
+
+static int l4f00242t03_probe(struct spi_device *spi)
+{
+	struct l4f00242t03_priv *priv;
+
+	priv = devm_kzalloc(&spi->dev, sizeof(struct l4f00242t03_priv),
+				GFP_KERNEL);
+	if (priv == NULL)
+		return -ENOMEM;
+
+	spi_set_drvdata(spi, priv);
+	spi->bits_per_word = 9;
+	spi_setup(spi);
+
+	priv->spi = spi;
+
+	priv->reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(priv->reset)) {
+		dev_err(&spi->dev,
+			"Unable to get the lcd l4f00242t03 reset gpio.\n");
+		return PTR_ERR(priv->reset);
+	}
+	gpiod_set_consumer_name(priv->reset, "lcd l4f00242t03 reset");
+
+	priv->enable = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(priv->enable)) {
+		dev_err(&spi->dev,
+			"Unable to get the lcd l4f00242t03 data en gpio.\n");
+		return PTR_ERR(priv->enable);
+	}
+	gpiod_set_consumer_name(priv->enable, "lcd l4f00242t03 data enable");
+
+	priv->io_reg = devm_regulator_get(&spi->dev, "vdd");
+	if (IS_ERR(priv->io_reg)) {
+		dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",
+		       __func__);
+		return PTR_ERR(priv->io_reg);
+	}
+
+	priv->core_reg = devm_regulator_get(&spi->dev, "vcore");
+	if (IS_ERR(priv->core_reg)) {
+		dev_err(&spi->dev, "%s: Unable to get the core regulator\n",
+		       __func__);
+		return PTR_ERR(priv->core_reg);
+	}
+
+	priv->ld = devm_lcd_device_register(&spi->dev, "l4f00242t03", &spi->dev,
+					priv, &l4f_ops);
+	if (IS_ERR(priv->ld))
+		return PTR_ERR(priv->ld);
+
+	/* Init the LCD */
+	l4f00242t03_lcd_init(spi);
+	priv->lcd_state = FB_BLANK_VSYNC_SUSPEND;
+	l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_UNBLANK);
+
+	dev_info(&spi->dev, "Epson l4f00242t03 lcd probed.\n");
+
+	return 0;
+}
+
+static void l4f00242t03_remove(struct spi_device *spi)
+{
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
+
+	l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN);
+}
+
+static void l4f00242t03_shutdown(struct spi_device *spi)
+{
+	struct l4f00242t03_priv *priv = spi_get_drvdata(spi);
+
+	if (priv)
+		l4f00242t03_lcd_power_set(priv->ld, FB_BLANK_POWERDOWN);
+
+}
+
+static struct spi_driver l4f00242t03_driver = {
+	.driver = {
+		.name	= "l4f00242t03",
+	},
+	.probe		= l4f00242t03_probe,
+	.remove		= l4f00242t03_remove,
+	.shutdown	= l4f00242t03_shutdown,
+};
+
+module_spi_driver(l4f00242t03_driver);
+
+MODULE_AUTHOR("Alberto Panizzo <maramaopercheseimorto@gmail.com>");
+MODULE_DESCRIPTION("EPSON L4F00242T03 LCD");
+MODULE_LICENSE("GPL v2");